Customize your metal components with the Metal Complex 1.25mm round hole punch pliers. These hole punch pliers can punch through copper, silver and brass with ease. With the ergonomically designed handle, you can punch holes all day in comfort. To punch a hole, simply hold the pliers horizontally and apply pressure to the handle. This tool comes with one extra pin set. Punch holes through metal blanks to easily add them to your jewelry designs. These hole punch pliers will punch through metals up to 24 gauge maximum.